Muffler repair jacket



Feb. 8, 1938. J. L. SMITH 2 ,5

MUFFLER REPAIR JACKET Filed April 30, 1937 Patented Feb. s, 1938 amuse MUFFLER ,narant racxn'r Joseph urn Smith, Glen Ellyn. Ill. I a u suon n ru so, 1931, Serlal No. 140,018

My invention relates to improvements in outer casings or jackets for the repair of muiilers oi the type commonly used in connection with automobiles.

In the operation of automobiles the exploded gases which are discharged through the muiiler tend to disintegrate the metal of the muiiler casing, and the wear'ls increased by corrosion due to exposure to moisture in the atmosphere. In these circumstances the muiiier becomes damaged to such an extent as to not only impairits eflectivea jacket.

It is the primary object of my invention therefore to provide a repair jacket which may be easily applied to a mufller without disconnecting the same, and of such construction that it will reinstate the effectiveness of the muiiler at comparatively small expense.

repair jacket that may be fitted to A further object of my invention is to provide a muiilers of diflferent sizes, in respect to length and width, and when applied will be securely held in place as well as give a neat flnishto the muilier.

with these principal objects in view my invention contemplates the formation of a repair jacket in two sections slidable one on the other and each split longitudinally, whereby the said sections or parts maybe adjusted to I the muiller, including the beads at the jacket in place.

In the following specifications I have set forth exactly flt ends of the casing, in connection with means for securing the the construction and application of my improved form of muiller repair jacket, and what I desire to claim as new and protect by Letters Patent is more specifically set forth in the appended claims.

In the drawing:-

Figure 1 is a side elevation illustrating the application of my improved form of repair jacket to a muilier.

Fig. 2 is a detail perspective view of sections constituting the jacket.

Fig. 3 isa. detail view of one o! the clamping the jacket to bands for securing the sections of the muiiier.

Fig. 4 is a side elevation showing a modification thepairoi ting .a fur- Like numerals of reference indicate like parts in the several views of the drawing.

In the construction of my improved form of muiller jacket it comprises two sections, ll, ii, and each section is split longitudinally for con- 5 venience in slipping said sections over the muiiler l2, ror'iltting them to muiliers of different diameters, and by providing a pair of split sections they are capable of being telescoped so that one may overlap the other for longitudinal adjust- 10 ment in accordance with the length of the muiller. Another important feature of the jacket is the formation of raised beads lfla, ila at the outer end of each section adapted to fit over the usual beads I! at the ends of the mufller for intimate engagement therewith in rigidly connecting the jacket to the'mufller and preventing longitudinal movement thereof with respect to the muflier.

The two-part jacket may be secured on the muiller in any suitable manner, as for instance by means of metal straps or bands I! having outturned ends to receive bolts I! by which the said straps or bands can be drawn tightly over the jacket in clamping it in place, or when the longitudinal edges overlap, as illustrated in Fig. 5, said sections may be secured to the muiller by means of screws i6 passing through the overlapping edges into the muilier casing. However, when secured in place in the manner last mentioned, that is, with the edges overlapping and secured to each other and to the mufller casing by screws, a closer joint is provided to prevent the escape of the exploded gases, and in this instance also the circumferential straps or bands may be used as an additional securing means, it being understood that it is desirable to have the two-part jacket closely flt the muiller casing at every point so as to seal any holes or cracks in themufller casing which have resulted from any cause. Furthermore, in those instances where the diameter of the muiller is such that the longitudinal edges of the sections of the jacket meet, or are slightly separated, the joint may be covered by a metal strip ll (Fig. 4), preferably terminating at the raised beads of the jacket, and in like manner when the length of the two-partjacket is such that the inner ends of the sections meet or overlap the joint is covered and made tight by one oi. the circumferential clamping bands M.

In the application of the two-part jacket to a mumer having plain ends (Fig. 5) the space below the raised beads at the outer ends of the sections of the jacket are packed with asbestos, indicated by the reference numeral l8, and this asbestos packing may be in the usual form of rope for convenience in applying the same, with the parts rigidly secured to the mullet by the clamping bands H at the center and ends of the jacket, and the end bands located contiguous to the beads Illa, Ha, respectively.

It will be apparent from the foregoing description that in attaching the repair, jacket one of the sections is slipped over that end of the muiiier from which the discharge pipe projects and is placed in pofition with the bead on the jacket engaging the bead on the muflier at the opposite end of the latter from the discharge pipe, and then the other section is likewise sprung over the muffler so as to either join or overlap the other section with the bead oi the last mentioned section in engagement with the other bead on the muiiier. In this manner the sections of the jacket can be readily applied without disconnecting the mullet from the pipe leading from the exhaust oi the engine. If the jacket exactly fits the mumer the inner ends of the sections will meet and the longitudinal edges will also meet, but by providing two sections split longitudinally it not only provides for springing them over the muiiier and adjusting them longitudinally but also provides for fitting muiliers of less diameter by overlapping the longitudinal edges of the sections of the jacket. The two sections are then fixedly secured to the mufiier by the clamping bands either alone or in addition to the screws at the longitudinal joint, and it will be obvious that the beads Illa, Ha, will be sprung or spread over the corresponding beads on the muiller to form tight joints, while in the case of a plain muiiier, or one without beads, the aforementioned beads on the repair jacket form pockets for the asbestos packing to likewise provide tight joints to prevent the escape of exploded gases.

I claim:

1. A repair jacket for mufllers comprising two sections each split longitudinally so as to adapt said sections for overlapping engagement with each other at their inner ends for longitudinal adjustment and each section adapted to overlap at their contiguous longitudinal edges for lateral adjustment, whereby said sections can be fitted to murders of different sizes, and means for securing the sections of the repair jacket in close engagement with the muiller casing.

2. A repair jacket for mui'iiers comprising two sections each split longitudinally so as to adapt said sections for overlapping engagement with each other at their inner ends for longitudinal adjustment and each section adapted to overlap at their contiguous longitudinal edges for lateral adjustment, whereby said sections can be titted to muiiiers of diil'erent sizes, beads at the outer ends of the sections of the repair jacket to provide tight joints at the ends of the jacket and muiiler casing, and means for securing the sections of the repair jacket in close engagement with the muilier casing.

3. A repair jacket for muiiiers comprising two sections each split longitudinally so as to adapt said sections for overlapping engagement with each other at their inner ends for longitudinal adjustment and each section adapted to overlap at their contiguous longitudinal edges ior lateral adjustment, whereby said sections can be titted to muiliers 0t diiierent sizes, strips covering the joints at the center and longitudinal edges oi the repair jacket, and means for securing the sections 01' the repair jacket in close engagement with the rnuilier casing.

4. A repair jacket for muiliers comprising two sections each split longitudinally so as to adapt said sections for overlapping engagement with each other at their inner ends for longitudinal adjustment and each section adapted to overlap at their contiguous longitudinal edges for lateral adjustment, whereby said sections can be fitted to muiilers of diflerent sizes, beads at the outer ends of the sections of the repair jacket adapted to be sprung over the beads at the outer ends of the muiiier casing, and clamping bands extending around the sections of the jacket, said bands having outturned ends with which clamping bolts engage for tightening the bands on the jacket.

5. A repair jacket for mumers comprising two sections each split longitudinally so as to adapt said sections for overlapping engagement with each other at their inner ends for longitudinal adjustment and each section adapted to overlap at their contiguous longitudinal edges for lateral adjustment, whereby said sections can be fitted to muiiiers of different sizes, heads at the outer ends of the sections of the repair jacket, asbestos packings between the beads and casing of the muifler, means for sealing the joints between the sections at the center and longitudinal edges thereof, and clamping bands extending around the sections of the jacket to secure them in close engagement with the muffler casing.

JOSEPH LEIGH SMITH. 

